/Engine/Source/Runtime/Engine/Classes/Animation/AnimData/IAnimationDataController.h
Removes a single key for the transform curve with provided identifier. Broadcasts a EAnimDataModelNotifyType::CurveChanged notify if successful.
Whether or not the transform curve key was successfully removed
bool RemoveTransformCurveKey ( const [FAnimationCurveIdentifier](API\Runtime\Engine\Animation\AnimData\FAnimationCurveIdentifier) & CurveId, float Time, bool bShouldTransact )